![Planet Money show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/026/080/small/npr-planet-money.jpg)
Summary: One set of not very popular folks is now suing another. It's bond insurer MBIA versus financial giant Merrill Lynch. At issue: whether the latter misled the former into selling insurance way too cheaply. Securities lawyer Zachary Rosenbaum decodes the briefs. Plus: Listener Renee Rico responds to the Elizabeth Warren interview.